Malicious PDF — malware analysis report

Static analysis result for SHA-256 3184834311bc95fa…

MALICIOUS

PDF

42.4 KB Created: 2020-10-16 08:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 899654caec2e07a12d0d08b11707428b SHA-1: 37d718d4f6ffdedea88648ea358048f9111d0f41 SHA-256: 3184834311bc95fa603c7862304ad06462b042f031408264e18ee5546b46b1e2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/123?keyword=major+imports+of+pakistan+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365627/normal_5f8824f82a5cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f88ebf9d2bd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_5f88caeae214c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f879c70489e6.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/2670b172.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bewoti.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/f05af64111af98b.pdfIn PDF document text
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/7856742.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/63e6123097d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f890bbf21f3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f8927878d703.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/93933.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/busixakowun_zefisuni.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/menedo-fodizelusekom.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/debizikirapanas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7876fcf-82ac-4c00-b680-5e241dd6e4b8/16039509200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c152d325-97d4-485c-93ad-5e5fb33ff114/musonuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dfd00b6-41a5-4b4c-ba43-2f0a67625540/74438874956.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000678e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678E 5300 bytes
SHA-256: a4cf85ec7bedfdc10c70212cbff21bc5f43d41adc68d400d961858a5bb486617
font_01_sfnt_off0000798d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798D 10260 bytes
SHA-256: 846a93eb2f5239e24468238128340e0029dd9f3d0fdfa65fcc841e66ec1f732d

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